题目
A.It is not useful
B.It is not necessary
C.They have to pay an extra premium for special additional risks
D.They don't like addtional risks
第1题
Why was Ms Simmons criticized according to the passage?
A.She gained illegal pay from a third company.
B.She failed to fulfill her duty in Brown University.
C.She refused to make compromises with the students.
D.She left Goldman Sachs's board in tough times.
第2题
Researchers have found that REM(rapid eye movement)sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a persons sleep becomes, the longer the periods of rapid eye movement. There are physical changes in the body to show that a person has changed from NREM(non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body there is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.
According to the passage, how often does REM sleep occur in one night?
A.Once.
B.Twice.
C.Four or five times.
D.Forty times.
第4题
A.what it is
B.why it is
C.why it does
D.what it does
第10题
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